Returning guest Terry Zobeck (234: Paul McCartney Lyrics ) spent his career studying drug addiction and its effects. With a PhD in anthropology besides, this Beatles scholar is uniquely qualified to discuss the Joe Goodenn's book, Riding So High: The Beatles and Drugs. (Here's Erin Weber's review.)    Our conversation covers a lot of ground, but mostly concerns itself with an informed perspective on how particular drugs affect the brain and behavior of users.  This podcast is sponsored by Better Help. Please go to betterhelp.com/satb to get 10% off your first month.